US PATENT SUBCLASS 222 / 302
.~.~.~.~ Material passage parallel to axis of rotation

Current as of: June, 1999
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222 /   HD   DISPENSING

251  DF  WITH DISCHARGE ASSISTANT (E.G., IMPELLER, PUMP, CONVEYER, MOVABLE TRAP CHAMBER, ETC.) {30}
282  DF  .~ With discharge volume varying means {12}
293  DF  .~.~ Rotor having plural adjustable parts of rotor form {2}
295  DF  .~.~.~ Axially adjustable {5}
302.~.~.~.~ Material passage parallel to axis of rotation

DEFINITION

Classification: 222/302

(under subclass 295) Dispensers in which the axially adjustable rotor parts each have at least one material passage extending therethrough in alignment with each other and parallel to the axis of rotation.

(1) Note. The two material passages generally have telescopic interengagement so that relative axial adjustment changes the volume of the passage, the passage functioning as a trap chamber, receiving material at one location and discharging it at another. Usually the two rotor elements are constructed to have plural such chambers which sequentially fill at one location and discharge at another.